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Chaoyang Unicom Company erected a large bending moment circular concrete pole communication tower construction site
电力电杆
Chaoyang Unicom Company erected a large bending moment circular concrete pole communication tower construction site
电力电杆
Reinforced concrete pole type rod
电力电杆
High-strength bending moment reinforced concrete pole communication tower
电力电杆
High-strength bending moment circular concrete pole
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High-strength bending moment circular concrete pole angle line
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